ISSN 1070-4272, Russian Journal of Applied Chemistry, 2007, Vol. 80, No. 4, pp. 643 ! 646. + Pleiades Publishing, Ltd., 2007.
Original Russian Text + E.E. Ergozhin, K.I. Imanbekov, E.R. Kendirzhanov, 2007, published in Zhurnal Prikladnoi Khimii, 2007, Vol. 80, No. 4,
pp. 658 ! 662.
AND POLYMERIC MATERIALS
Ion Exchangers Based on Homo- and Copolymers
of Vinyloxyethylamine and Epoxy Compounds
E. E. Ergozhin, K. I. Imanbekov, and E. R. Kendirzhanov
Bekturov Institute for Chemical Sciences, Ministry of Education and Science
of the Republic of Kazakhstan, Almaty, Kazakhstan
Received June 14, 2005; in final form, March 2007
Abstract-A method was developed for synthesis of highly permeable polyelectrolytes through the reaction
of polyvinyloxyethylamine with various glycidyl derivatives of dihydroxybenzenes, aminophenols, and
aromatic diamines. The physicochemical and sorption properties of the resulting polymers were examined.
Soluble and cross-linked ion exchangers produced
on the basis of polyvinyloxyethylamine (PVOEA,
monoethanolamine polyvinyl ether) demonstrate
unique performance characteristics as sorbents, exhi-
biting high chemical, thermal, and radiation resistance.
They are widely used in solving diverse problems of
chemical technology, e.g., for recovery of noble, rare,
and nonferrous metals and purification of medical
In this study, we synthesized polyfunctional ion-
exchange resins by the reaction of di-, tri-, and
tetraglycidyl derivatives of dihydroxybenzenes, m-
and p-aminophenols, and aromatic diamines with
VOEA homo- and copolymers and characterized their
Epoxy compounds (ECs): diglycidyl derivatives of
resorcinol (DGR), hydroquinone (DGH), and aniline
(DGA); triglycidyl derivatives of m- and p-amino-
phenols (TGmAP, TGpAP); and tetraglycidyl deriva-
tive of diaminodiphenylmethane (TGDADPM) were
prepared as in .
VOEA-based polymers: homopolymer (PVOEA)
and VOEA copolymers with N-vinylpyrrolidone
(VOEA3NVP) and 2-methyl-5-vinylpyridine (VOEA3
MVP) were synthesized at a monomer molar ratio of
VOEA : vinylpyridine = 25 : 75 by the procedure de-
scribed in .
The ion exchangers were synthesized by polycon-
densation of homo- and copolymers of VOEA with
ECs  in isobutanol at 603120oC for 8310 h.
The reaction mixture was poured on a tray and con-
centrated at 80oC. The resulting product was crushed
and screened to obtain the 0.25-mm fraction by the
standard procedure [11, 12].
The chemical resistance of the resins against acids
and alkalis was studied according to [11, 13]. Two 1-g
samples were placed in 250-ml round-bottomed flasks.
One sample was poured over with 100 ml of 5 M
and the other sample, with 100 ml of 5 M
NaOH. The contents were heated for 30 min (water
bath) with a reflux condenser and then cooled to room
temperature. The sample was filtered off and, if needed,
converted into the OH form. Finally, the sample was
washed with distilled water and analyzed for the static
exchange capacity (SEC). The chemical resistance of
the resin X (%) was estimated as
x = 77 0 100,
and SEC are the static exchange capaci-
ties of the resin before and after treatment, respectively.
To determine the chemical resistance of the resins
against oxidants [11, 13], a 1-g resin sample was
poured over with 100 ml of 10% H
to stand for 48 h at room temperature with intermit-
tent stirring. Then the resin was filtered off, converted
into the OH form, washed with distilled water, and
analyzed for SEC
. The chemical resistance was
estimated by Eq. (1).
The kinetics of the reaction of DGEA with
PVOEA was studied IR-spectroscopically on a Spec-